Thank you, we're using these lights: https://www.amazon.com/gp/product/B081F6YSH4/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

Yes, the shelves are adjustable and that has been suggested by others here, which we will definitely take under advisement. As far as the benefits of the purple lights, this is a link that helps explain the benefits of the different lights https://growlightinfo.com/what-color-light-do-plants-grow-best-in/